Gas-burner.



PATENTED MAY l5, 1906.

F. 0. CARLSON.

GAS BURNER.

. APgLIoATIoN FILED JULY 15, 1905.

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UNITED STATES PATENT oirrcn.

FRANS OSCAR CARLSON, OF NEW YORK, N. Y.

GAS-BURNER.

Speccaton of Letters Patent.

Application lerl July 15,1905. Serial No. 269,758.

Patented May 15, 190e.

New York, in the county of Kings and State v of New York, have invented certain new and useful Improvements in Gas Burners, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact specification.

My present improvements have relation chiefly to gas-burners intended for illuminating purposes; but obviously my invention may be advantageously applied in connection with gas-burners for other purposes-such, for instance, as heating purposes.

The principal object of vmy invention is to provide or produce a gas-burner of few and simple parts, easy of construction and operation, and reliable in action, which shall automatically prevent the iiow of 0as through the burner after the pressure has f been-cut off or reduced below a degree necessary for the ordinary support of combustion at -the burner-tip.

In the use of gas for illuminating and other purposes it frequently occurs that the gaspressure is reduced in the supply-pipes, either by accident or design, to a degree suiiicient to permit the ready extinguishment of the flame, and it frequently occurs that the gascock near the burner is accidentally opened after it has been once closed to extinguish the flame. In these and other similar cases with the ordinary forms of burners the gas issues from the burner-tip without being consumed and becomes dangerous to life and health and property, as is very well understood.

To obviate these disadvantages in the use of gas-burners, to accomplish the object of my invention as above set forth, and to secure other and further advantages in the matters of construction and operation, my irnprovements involve certain new and useful peculiarities of construction, relative arrangements or combinations of parts, and principles of operation, as will be herein first i fully described and then pointed out in the or any purpose parts in full lines in position to permit the ilow of gas to the tip without interference, as when the gas is ignlted. Fig. 2 is a horizontal section and partial plan view on aplane through line 2 2 of Fig. 1.

In both these gures like letters of reference wherever they occur indicate correi sponding parts.

A is the shell of the burner, and B an ordinary illuminating-tip at the point where the gas is intended to be consumed. The shell A is threaded upon a suitable burner-seat C, into which gas is admitted from a supplypipe D, the flow of gas bein controlled and regulated at the location 'o the burner by any ordinary form of gas-cock, as at E, interposed between the gas-supply pipe -and the burner.

Into the seat C, of whatever form or character it may be, I introduce a plug F, having an axial perforation through it for the passage of gas, the top of this plug being finished so as to form a seat for the safety-valve which I employ, having a recess in its upper part to accommodate a projection on the lower part n of said valve and operating as a guide for the stem of the valve. The upper part of the seat C for the burner-shell is cut away or reduced, as at a a, and provided with openings, as b b, through which the gas may pass on lts way to the burner-tip. l

Within Athe upper neck of the seat C, I locate the safety-valve which I employ, the same being com aratively light and composed of a'flat dis i G, having a projection on its lower face, the said projection being fitted to easily enter the recess provided for it in the ulpper portion of the plug F and carrying a s ender stem d, which projects down through the central pei foration in the said plug. The stem d is not large. enough to interfere with the necessary free iiow of gas through the central perforation in the plug F. The valve and its appendages are of weight sufiicient to drop easily upon the plug F when the gaspressure is sufficiently reduced or entirely cut off, and they are so calculated as to size and weight that the valve will be sustained in elevated position by the pressure of the outgoing gas onits under side after the valve has been properly raised. Above the opening b b the burner-seat C is closed by a plug e, having a small perforation through it, the plug e being located so that the disk G in its elevated position will rest above the openings b b.

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As long as the valve G is maintained in its.

gas is stoppe or sufficiently reduced, either by turning the gas-cock E or by any other means, the valve G will automatically drop and effectually close the passage for gas through the plug F. Then if the gas-cock G be opened or the pressure of gashin the supplypipe be restored the valve G will prevent the passage of gas to and through the burnershell, thus operating as a safety ap liance to automatically prevent the disa vantages heretofore pointed out. When the safetyvalve is opened, its whole lower surface is exposed to the pressure of the gas then flowing; but when it is seated or closed the gas-pressure can only act on an extremely-limited sur-face of the valve, and therefore cannot raise or open it.

In order to open the valve G after it has been seated, suitable means are provided by which the valve may be purposely and manually raised from the exterior. H is a small plug on the inner end of the stem f, passing down through an opening in the bottom of the burner-seat O and supplied with a small weight'on its outer extremity, as at g. lThe stem f, with its lug H, are so seated that they may be easi y moved, but so that they will prevent escape of gas around them. After the gas has been turned on the ball or weight gis to be elevated by the hand or finger and then allowed to drop. The plug H, contacting with the lower end of the stem d on the valve, raises the disk G above the openings b,

and the pressure of the gas on the valve then holds it 1n opened position.

The stop-plug e has a small perforation through it, as indicated, to permit the escape of gas which might leak around the circumference of the valve G. Otherwise there would be formed a chamber for this gas, and the gas expanding therein might under some circumstances cause the seating of the valve by overbalancing the pressure on the under side of the valve.

The improvements being constructed and applied substantially in accordance with the foregoing explanations, constitute a safety appliance well calculated to answer all the purposes or objects of the invention hereinbefore alluded to.

Having now fully described my invention, what I claim as new herein, and desire to secure by Letters Patent, is-

1. In a gas-burner, the combination with the seat for the burner-shell, said seat having Yperforations and gas-channels, of a valve adapted and arranged to automatically close the gas-channel in said seat when the gaspressure is reduced, said valve being held open by the gas-pressure and provided with a projecting stem extending through the valveseat, and a sliding rod for manually opening the valve from the exterior, after it has been seated, by contacting directly with said projecting stem, substantially as set forth.

2. The combination with the seat for the burner-shell, said seat having perforations and gas-channels, of the valve having a rojecting stem, a seat for the valve, a sli ing rod for manually opening said valve from the exterior by contacting directly with the said projecting stem, and a perforated stop located in the burner-seat above the uppermost position of the valve, substantially as and for the pur oses set forth.

3. In a gasu1 ner, the combination with the automatically-closing valve located in the burner, a seat for said valve, and a stop-plug for limiting the upward travel of the valve, said stop-plug being perforated to permit escape of gas, substantially as and for` the purposes set forth.

v 4. In a gas-bur ner, the combination of the burner-shell, the seat therefor having perforations and gas-channels, an interior valve having a depending stem, a plug forrr-ing a seat for said valve, and means for manually raising the valve from the exterior by contacting with the projecting valve-stem, substantially as and for the purposes set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANS OSCAR CARLSON.

Witnesses:

C. SEDGWICK, J. DAWLEY. 

